Nutso's Waterfall

The future of energy should be thorium in one form or another (accelerator driven sub critical reactor looks the most promising) but as there is no nuclear weapons to be had from it there may never be the massive investment required to prove the technology in any practical way.

solar would also be an option for residential power if technology can improve the efficacy of pv panels above the 25% ish they are at the moment but it is unlikely to provide the power required by industry.